May 2015
Service Manual
Manifolds
Part No. 1257106
GS-2669 BE • GS-3369 BE • GS-4069 BE
97
How to T est a Coil Di ode
How to Test a Coil Diode
Properly functioning coil diodes protect the
electrical circuit by suppressing voltage spikes.
Voltage spikes naturally occur within a function
circuit following the interruption of electrical current
to a coil. Faulty diodes can fail to protect the
electrical system, resulting in a tripped circuit
breaker or component damage.
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
1 Test the coil for resistance. Refer to Repair
Procedure,
How to Test a Coil
.
2 Connect a 10W resistor to the negative
terminal of a known good 9V DC battery.
Connect the other end of the resistor to a
terminal on the coil.
Resistor 10Ω
Genie part number 27287
Note: The battery should read 9V DC or more when
measured across the terminals.
1 multimeter
2 9v DC battery
3 10Ω resistor
4 coil
3 Set a multimeter to read DC current.
Note: The multimeter, when set to read DC current,
should be capable of reading up to 800 mA.
4 Connect the negative lead to the other
terminal on the coil.
5 Momentarily connect the positive lead from
the multimeter to the positive terminal on the
9V DC battery. Note and record the current
reading.
6 At the battery or coil terminals, reverse the
connections. Note and record the current
reading.
Result: Both current readings are greater than
0 mA and are different by a minimum of 20%.
The coil is good.
Result: If one or both of the current readings
are 0 mA, or if the two current readings do not
differ by a minimum of 20%, the coil and/or its
internal diode are faulty and the coil should be
replaced.
Summary of Contents for Genie GS-2669 BE
Page 1: ...Service Manual GS 2669 BE GS 3369 BE GS 4069 BE Part No 1257106 Rev A3 May 2015...
Page 27: ...May 2015 Service Manual Specifications Part No 1257106 GS 2669 BE GS 3369 BE GS 4069 BE 11...
Page 100: ...Service Manual May 2015 Manifolds 84 GS 2669 BE GS 3369 BE GS 4069 BE Part No 1257106...
Page 173: ...May 2015 Service Manual 157 Contactor Box Layout All Models...
Page 176: ...Service Manual May 2015 160 Ground Control Box Layout All Models...
Page 177: ...May 2015 Service Manual 161 Platform Control Box Layout All Models...
Page 180: ...Service Manual May 2015 164 Generator Wiring Diagram All Models...
Page 185: ...May 2015 Service Manual 169 Electrical Schematic GS 4069 BE with 2 Speed Lift ANSI CSA...
Page 188: ...Service Manual May 2015 172 Electrical Schematic GS 4069 BE with Proportional Lift ANSI CSA...
Page 193: ...May 2015 Service Manual 177 Electrical Schematic GS 4069 BE with 2 Speed Lift AS CE...
Page 196: ...Service Manual May 2015 180 Electrical Schematic GS 4069 BE with Proportional Lift AS CE...
Page 197: ...May 2015 Service Manual 181 Hydraulic Schematic GS 2669 BE and GS 3369 BE with 2 Speed Lift...
Page 201: ...May 2015 Service Manual 185 Hydraulic Schematic GS 4069 BE with 2 Speed Lift...
Page 205: ......